Rotary 3D printing equipment

Abstract

The utility model discloses rotary 3D printing equipment which comprises a rack, a rotary table rotationally arranged on the rack and a printing device arranged above the rotary table, and the printing device comprises a powder falling device, a rolling device, a binder jet printing device and a baking device which are sequentially arranged in the rotating direction of the rotary table. The bottom of the rotating table is rotationally connected to the rack through a rotating motor, and the bottom of the rotating motor is arranged on the rack in a lifting mode through a lifting device. The rotary 3D printing equipment is compact in structure, linear reciprocating motion of conventional equipment is avoided, the overall space of the equipment is greatly reduced, seamless work connection of powder falling, powder laying, printing and drying is achieved, and the work efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of 3D printing technology, and in particular to a rotational 3D printing device. Background Art

[0002] 3D printing is generally based on the principle of "layered slicing and layer-by-layer accumulation". First, a complex three-dimensional geometric entity is divided into thin slices with simple contours. When printing begins, powder is spread on the workbench as a molding material. After the powder is spread, the nozzle of the binder printing device sprays the binder on the powder surface as needed to achieve single-layer powder bonding. After the single-layer binder is sprayed, the workbench drops one layer thickness and starts the next layer of powder spreading, and so on and so forth until the last layer is printed and the product is taken out. In existing equipment, the running movements of the powder spreading device and the binder printing device are both linear reciprocating motions, which result in slow printing efficiency, large operating space, large equipment volume, and high cost. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of the utility model is to provide a rotary 3D printing device to overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The embodiment of the present application discloses a rotary 3D printing device, comprising a frame, a rotating table rotatably arranged on the frame, and a printing device arranged above the rotating table, wherein the printing device comprises a powder dropping device, a rolling device, a binder spraying device and a baking device arranged in sequence along the rotation direction of the rotating table, the bottom of the rotating table is rotatably connected to the frame via a rotating motor, and the bottom of the rotating motor is lifted and lowered on the frame via a lifting device.

[0006] Furthermore, in the above-mentioned rotary 3D printing device, the frame includes a horizontally arranged workbench, a support frame supporting the workbench, and a mounting frame for mounting the printing device.

[0007] Furthermore, in the above-mentioned rotary 3D printing equipment, the rolling device includes a pre-flattening roller and a flattening roller which are rotatably arranged on the mounting frame, the pre-flattening roller and the flattening roller are arranged at an angle and are respectively arranged along the radial direction of the rotating table.

[0008] Furthermore, in the above-mentioned rotary 3D printing device, the ends of the pre-flattening roller and the flattening roller away from the center of the rotating table are respectively connected to rolling motors.

[0009] Furthermore, in the above-mentioned rotary 3D printing device, the lifting device includes an electric cylinder fixed to the bottom of the workbench and a lifting seat for installing the rotary motor, and the push rod of the electric cylinder slides through the workbench and is connected to the lifting seat.

[0010] Furthermore, in the above-mentioned rotary 3D printing device, the bottom surface of the lifting seat is provided with a plurality of guide rods which slide through the workbench.

[0011] Furthermore, in the above-mentioned rotary 3D printing device, the rotary motor is a DD motor.

[0012] Compared with the prior art, the advantages of the utility model are: the rotary 3D printing equipment of the utility model has a compact structure, avoids the linear reciprocating motion of conventional equipment, greatly reduces the overall space of the equipment, realizes seamless work connection of powder dropping, powder spreading, printing and drying, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 Shown is a schematic structural diagram of a rotary 3D printing device in a specific embodiment of the utility model.

[0015] Figure 2 Shown is a schematic diagram of the installation of a rotating table in a specific embodiment of the utility model.

[0016] Figure 3 Shown is a schematic structural diagram of a pre-flattening roller or a flattening roller in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model in detail. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Ginseng Figures 1 to 3As shown, the rotary 3D printing device in this embodiment includes a frame 1, a rotating table 2 rotatably arranged on the frame 1, and a printing device arranged above the rotating table 2. The printing device includes a powder dropping device 3, a rolling device 4, a binder spraying device 5 and a baking device 6 arranged in sequence along the rotation direction of the rotating table 2. The bottom of the rotating table 2 is rotatably connected to the frame 1 through a rotating motor 7, and the bottom of the rotating motor 7 is lifted and lowered on the frame 1 through a lifting device 8.

[0019] In this technical solution, the powder dropping device, rolling device, adhesive spraying device and baking device of the printing device can all utilize the structures recorded in the prior art, and are suspended on the top of the turntable through a frame, and are arranged in sequence along the rotation direction of the turntable. During the rotation of the turntable, the powder dropping device drops powder, the rolling device flattens the powder bed, the spraying device sprays out printed graphics on the powder bed, and the baking device assists the adhesive in rapid solidification to complete a cycle of work, thereby achieving seamless work connection of powder dropping, powder spreading, printing and drying, improving work efficiency, and the rotating turntable avoids the linear reciprocating motion of conventional equipment and greatly reduces the overall space of the equipment.

[0020] For example, Figure 1 and Figure 2 As shown, the frame 1 includes a horizontally arranged workbench 11, a support frame 12 supporting the workbench, and a mounting frame (not shown) for mounting a printing device.

[0021] In this technical solution, the workbench is a horizontally arranged table top and is supported by a support frame. The support frame is made of conventional profiles and anchor bolts, and the mounting frame is made of profiles. The specific structure can be determined according to the actual layout, and the powder dropping device, rolling device, adhesive printing device and baking device can be suspended on the top of the rotating table.

[0022] For example, Figure 1 As shown, the rolling device 4 includes a pre-flattening roller and a flattening roller which are rotatably arranged on a mounting frame. The pre-flattening roller and the flattening roller are arranged at an angle and are respectively arranged along the radial direction of the rotating table 2.

[0023] In this technical solution, the pre-leveling roller uses a roller shaft with a knurled surface to preliminarily flatten the powder bed, and the flattening roller uses a smooth roller shaft to flatten the powder bed. The powder bed is flattened in steps to improve the flatness of the powder bed.

[0024] For example, Figure 1 and Figure 3 As shown, the ends of the pre-flattening roller and the flattening roller facing away from the center of the rotating table 2 are respectively connected to rolling motors.

[0025] In this technical solution, the rolling motor is a conventional servo motor, and is connected to the ends of the corresponding pre-flattening roller and the flattening roller through conventional couplings, etc., that is, the pre-flattening roller and the flattening roller are rotatably arranged to improve the effect of leveling the powder bed; the pre-flattening roller and the flattening roller are arranged through roller brackets, and the roller brackets are in a "Π" shape. The central axes of the pre-flattening roller and the flattening roller are respectively rotatably arranged at the two ends of the roller brackets through bearings, etc., and the rolling motor is fixed to the end of the roller bracket through a mounting plate, etc., and is driven and connected to the central axis of the corresponding pre-flattening roller or the flattening roller through conventional devices such as couplings.

[0026] For example, Figure 1 and Figure 2 As shown, the lifting device 8 includes an electric cylinder fixed to the bottom of the workbench and a lifting seat for mounting the rotary motor 7. The push rod of the electric cylinder slides through the workbench and is connected to the lifting seat.

[0027] In this technical solution, after completing a layer of powder printing, the lifting device drives the rotating table to descend relative to the printing device, and starts the next layer of powder dropping, powder spreading, printing and drying. The electric cylinder uses a conventional servo electric cylinder and is fixed to the ground of the workbench by bolts, etc. A through hole is provided in the workbench to accommodate the sliding passage of the electric cylinder push rod. The lifting seat is a conventional disc-shaped structure, which is fixed to the top of the electric cylinder push rod by conventional bolts, etc., and is used to carry the rotating motor and the rotating table.

[0028] For example, Figure 1 and Figure 2 As shown, the bottom surface of the lifting seat is provided with a plurality of guide rods 9 which slide through the workbench.

[0029] In this technical solution, the guide rod is a conventional guide rod and is fixed to the bottom surface of the lifting seat by bolts, etc. A linear bearing or bushing corresponding to the guide rod is arranged in the workbench to improve the lifting accuracy of the rotary table, thereby improving the processing accuracy.

[0030] For example, Figure 1 and Figure 2 As shown, the rotary electric machine 7 is a DD motor.

[0031] In this technical solution, the rotating motor 7 is a DD motor, which is directly connected to the rotating table through bolts or the like, thereby simplifying the structure.

[0032] In summary, the rotary 3D printing device of the utility model has a compact structure, avoids the linear reciprocating motion of conventional equipment, greatly reduces the overall space of the equipment, realizes seamless work connection of powder dropping, powder spreading, printing and drying, and improves work efficiency.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A device for rotating 3D printing, characterized in that: The invention comprises a frame, a rotating table rotatably arranged on the frame, and a printing device arranged above the rotating table. The printing device comprises a powder dropping device, a rolling device, a binder spraying device and a baking device arranged in sequence along the rotating direction of the rotating table. The bottom of the rotating table is rotatably connected to the frame through a rotating motor, and the bottom of the rotating motor is lifted and lowered on the frame through a lifting device.

2. The rotary 3D printing device according to claim 1, characterized in that: The frame comprises a horizontally arranged workbench, a supporting frame supporting the workbench and a mounting frame for mounting a printing device.

3. The rotary 3D printing device according to claim 2, characterized in that: The rolling device comprises a pre-flattening roller and a flattening roller which are rollingly arranged on a mounting frame. The pre-flattening roller and the flattening roller are arranged at an angle and are respectively arranged along the radial direction of the rotating table.

4. The rotary 3D printing device according to claim 3, characterized in that: The ends of the pre-flattening roller and the flattening roller away from the center of the rotating table are respectively connected to rolling motors.

5. The rotary 3D printing device according to claim 2, characterized in that: The lifting device comprises an electric cylinder fixed to the bottom of a workbench and a lifting seat for mounting a rotating motor. A push rod of the electric cylinder slides through the workbench and is connected to the lifting seat.

6. The rotary 3D printing device according to claim 5, characterized in that: The bottom surface of the lifting seat is provided with a plurality of guide rods which slide through the workbench.

7. The rotary 3D printing device according to claim 1, characterized in that: The rotating motor is a DD motor.

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